#undef DEBUG
 #endif
 
+#define EFSCORRUPTED   EUCLEAN         /* Filesystem is corrupted */
+
 #define DENTRY_SIZE            32      /* dir entry size */
 #define DENTRY_SIZE_BITS       5
 
 /* return values */
 #define FFS_SUCCESS             0
 #define FFS_MEDIAERR            1
-#define FFS_FORMATERR           2
 #define FFS_MOUNTED             3
 #define FFS_NOTMOUNTED          4
 #define FFS_ALIGNMENTERR        5
 
                        return FFS_MEDIAERR;
        }
 
-       return FFS_FORMATERR;
+       return -EFSCORRUPTED;
 }
 
 void free_alloc_bitmap(struct super_block *sb)
        struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
 
        if (p_bpb->num_fats == 0)
-               return FFS_FORMATERR;
+               return -EFSCORRUPTED;
 
        num_root_sectors = GET16(p_bpb->num_root_entries) << DENTRY_SIZE_BITS;
        num_root_sectors = ((num_root_sectors - 1) >>
        struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
 
        if (p_bpb->num_fats == 0)
-               return FFS_FORMATERR;
+               return -EFSCORRUPTED;
 
        p_fs->sectors_per_clu = p_bpb->sectors_per_clu;
        p_fs->sectors_per_clu_bits = ilog2(p_bpb->sectors_per_clu);
        struct bd_info_t *p_bd = &(EXFAT_SB(sb)->bd_info);
 
        if (p_bpb->num_fats == 0)
-               return FFS_FORMATERR;
+               return -EFSCORRUPTED;
 
        p_fs->sectors_per_clu = 1 << p_bpb->sectors_per_clu_bits;
        p_fs->sectors_per_clu_bits = p_bpb->sectors_per_clu_bits;